CA2487404A1 - Recording medium with copy protection indicating information and apparatus and methods for forming, recording, reproducing and restricting reproduction of the recording medium - Google Patents
Recording medium with copy protection indicating information and apparatus and methods for forming, recording, reproducing and restricting reproduction of the recording medium Download PDFInfo
- Publication number
- CA2487404A1 CA2487404A1 CA002487404A CA2487404A CA2487404A1 CA 2487404 A1 CA2487404 A1 CA 2487404A1 CA 002487404 A CA002487404 A CA 002487404A CA 2487404 A CA2487404 A CA 2487404A CA 2487404 A1 CA2487404 A1 CA 2487404A1
- Authority
- CA
- Canada
- Prior art keywords
- copy protection
- recording medium
- protection information
- data
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
- G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- G—PHYSICS
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- G—PHYSICS
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- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
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- G11B20/00268—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored as a barcode said barcode being recorded in a burst cutting area [BCA]
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- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
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- G11B20/00304—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD the key being stored in the lead-in area [LIA]
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- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
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- G11—INFORMATION STORAGE
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- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00376—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored by varying the pit format, e.g. depth, width, length or edge positions
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- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00405—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored by varying characteristics of the recording track, e.g. by altering the track pitch or by modulating the wobble track
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
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- G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
- G11B20/00586—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
- G11B20/00601—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium wherein properties of tracks are altered, e.g., by changing the wobble pattern or the track pitch, or by adding interruptions or eccentricity
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
- G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24082—Meandering
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/122—Burst cutting area [BCA]
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- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1278—Physical format specifications of the record carrier, e.g. compliance with a specific standard, recording density, number of layers, start of data zone or lead-out
- G11B2020/1279—Permanent information and control data stored in the PIC zone of a Blu-Ray disc
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- G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
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- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
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- G11—INFORMATION STORAGE
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- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
- G11B23/281—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs by changing the physical properties of the record carrier
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- G11—INFORMATION STORAGE
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- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
Abstract
A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes copy protection indicating information, which can identify whether copy protection information is needed or not for the playback of contents stored on the recording medium, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
Claims (40)
1. A recording medium including recorded data, comprising:
copy protection indicating information indicating whether or not the recording medium contains copy protection information for use in decrypting the recorded data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.
copy protection indicating information indicating whether or not the recording medium contains copy protection information for use in decrypting the recorded data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.
2. The recording medium according to claim 1, wherein the data is reproduced utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or the data is reproduced directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data.
3. The recording medium according to claim 2, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium does not contain copy protection information.
4. The recording medium according to claim 2, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium contains copy protection information, hut a value of the copy protection information indicates that copy protection information is not present.
5. The recording medium according to claim 2, wherein the recording medium contains copy protection information for use in decrypting the data when the copy protection indicating information indicates the recording medium contains copy protection information and a value of the copy protection information indicates that copy protection information is present.
6. The recording medium according to claim 5, wherein decrypting the data utilizing the copy protection information precedes playback of the data.
7. A method of forming a recording medium, comprising:
forming a recordable area for storing recorded data;
forming an area on the recording medium for storing copy protection indicating information indicating whether or not the recording medium contains copy protection information for use in decrypting the recorded data, wherein the copy protection indicating information and/or the copy protection information are formed as wobbled pre-pit pattern on an area of the recording medium.
forming a recordable area for storing recorded data;
forming an area on the recording medium for storing copy protection indicating information indicating whether or not the recording medium contains copy protection information for use in decrypting the recorded data, wherein the copy protection indicating information and/or the copy protection information are formed as wobbled pre-pit pattern on an area of the recording medium.
8. The method according to claim 7, wherein the data may be reproduced utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or the data may be reproduced directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data.
9. The method according to claim 8, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium does not contain copy protection information.
10. The method according to claim 8, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium contains copy protection information, but a value of the copy protection information indicates that copy protection information is not present.
11. The method according to claim 8, wherein the recording medium contains copy protection information for use in decrypting the data when the copy protection indicating information indicates the recording medium contains copy protection information and a value of the copy protection information indicates that copy protection information is present.
12. The method according to claim 11, wherein decrypting the data utilizing the copy protection information precedes playback, of the data.
13. A method of reproducing data from a recording medium, comprising:
utilizing copy protection indicating information to indicate whether or not the recording medium contains copy protection information for use in decrypting the data, to reproduce the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.
utilizing copy protection indicating information to indicate whether or not the recording medium contains copy protection information for use in decrypting the data, to reproduce the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.
14. The method according to claim 13, further comprising reproducing the data utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or reproducing the data directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data.
15. The method according to claim 14, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium does not contain copy protection information.
16. The method according to claim 14, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium contains copy protection information, but a value of the copy protection information indicates that copy protection information is not present.
17. The method according to claim 14, wherein the recording medium contains copy protection information for use in decrypting the data when the copy protection indicating information indicates the recording medium contains copy protection information and a value of the copy protection information indicates that copy protection information is present.
18. The method according to claim 17, wherein said playing includes decrypting the data utilizing the copy protection information.
19. A method for playing data of a recording medium, comprising:
detecting copy protection indicating information indicating whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium; and playing the data utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or playing the data directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data, based on the detected copy protection indicating information.
detecting copy protection indicating information indicating whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium; and playing the data utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or playing the data directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data, based on the detected copy protection indicating information.
20. The method according to claim 19, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium does not contain copy protection information.
21. The method according to claim 19, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium contains copy protection information, but a value of the copy protection information indicates that copy protection information is not present.
22. The method according to claim 19, wherein the recording medium contains copy protection information for use in decrypting the data when the copy protection indicating information indicates the recording medium contains copy protection information and a value of the copy protection information indicates that copy protection information is present.
23. The method according to claim 22, wherein said playing includes decrypting the data utilizing the copy protection information.
24. A method of recording data on a recording medium, comprising:
utilizing copy protection indicating information to indicate whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.
utilizing copy protection indicating information to indicate whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.
25. The method according to claim 24, wherein the data may be reproduced utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or the data may be reproduced directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data.
26. The method according to claim 25, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium does not contain copy protection information.
27. The method according to claim 25, wherein the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium contains copy protection information, but a value of the copy protection information indicates that copy protection information is not present.
28. The method according to claim 25, wherein the recording medium contains copy protection information for use in decrypting the data when the copy protection indicating information indicates the recording medium contains copy protection information and a value of the copy protection information indicates that copy protection information is present.
29. The method according to claim 28, wherein decrypting the data utilizing the copy protection information precedes playback of the data.
30. An apparatus for reproducing data from a recording medium, said apparatus utilizing copy protection indicating information to determine whether or not the recording medium contains copy protection information for use in decrypting the data, to reproduce the data based on the copy protection indicating information and the copy protection information, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium.
31. The apparatus according to claim 30, wherein said apparatus reproduces the data utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or reproduces the data directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data.
32. The apparatus according to claim 31, wherein said apparatus determines the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium does not contain copy protection information.
33. The apparatus according to claim 31, wherein said apparatus determines the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium contains copy protection information, but a value of the copy protection information indicates that copy protection information is not present.
34. The apparatus according to claim 31, wherein said apparatus determines the recording medium contains copy protection information for use in decrypting the data when the copy protection indicating information indicates the recording medium contains copy protection information and a value of the copy protection information indicates that copy protection information is present.
35. The apparatus according to claim 34, wherein said apparatus decrypts the data utilizing the copy protection information.
36. An apparatus for reproducing data from a recording medium, comprising:
a detector detecting signals recorded on the recording medium, the signal including copy protection indicating information to determine whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium ; and a signal processor for playing the data utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or playing the data directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data based on the copy protection indicating information.
a detector detecting signals recorded on the recording medium, the signal including copy protection indicating information to determine whether or not the recording medium contains copy protection information for use in decrypting the data, wherein the copy protection indicating information and/or the copy protection information are recorded in wobbled pre-pit pattern on an area of the recording medium ; and a signal processor for playing the data utilizing the copy protection information if the recording medium contains copy protection information for use in decrypting the data, or playing the data directly without utilizing the copy protection information, if the recording medium does not contain copy protection information for use in decrypting the data based on the copy protection indicating information.
37. The apparatus according to claim 36, wherein said signal processor determines the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium does not contain copy protection information.
38. The apparatus according to claim 36, wherein said signal processor determines the recording medium does not contain copy protection information for use in decrypting the data if the copy protection indicating information indicates the recording medium contains copy protection information, but a value of the copy protection information indicates that copy protection information is not present.
39. The apparatus according to claim 36, wherein said signal processor determines the recording medium contains copy protection information for use in decrypting the data when the copy protection indicating information indicates the recording medium contains copy protection information and a value of the copy protection information indicates that copy protection information is present.
40. The apparatus according to claim 39, wherein said signal processor decrypts the data utilizing the copy protection information.
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PCT/KR2004/000107 WO2004066283A1 (en) | 2003-01-23 | 2004-01-20 | Recording medium with copy protection indicating information and apparatus and methods for forming, recording, reproducing and restricting reproduction of the recording medium |
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- 2004-01-19 WO PCT/KR2004/000081 patent/WO2004066287A1/en active Application Filing
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